At the Instant a 2

question 8

Multiple Choice

At the instant a 2.0-kg particle has a velocity of 4.0 m/s in the positive x direction, a 3.0-kg particle has a velocity of 5.0 m/s in the positive y direction. What is the speed of the center of mass of the two-particle system?

• A) 3.8 m/s
• B) 3.4 m/s
• C) 5.0 m/s
• D) 4.4 m/s
• E) 4.6 m/s

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Definitions:

Salivated

The secretion of saliva from the salivary glands, usually in response to the presence or anticipation of food.

Polyandrous

A mating system where a female has multiple male partners.

Females

The sex of an organism, or part of a population, which produces non-mobile ova (egg cells) and can typically bear offspring.